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Finding the Fourth Proportional to 767.48, 1,150.71 and 273.68

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Solution

The fourth proportional to 767.48, 1,150.71 and 273.68 is: 410.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    767.48 : 1,150.71 = 273.68 : x
  2. Step 2: Convert to fraction form
    767.48/1,150.71 = 273.68/x
  3. Step 3: Cross multiply
    767.48x = 1,150.71 × 273.68
  4. Step 4: Simplify right side
    767.48x = 314,923.85
  5. Step 5: Solve for x
    x = 314,923.85/767.48
  6. Step 6: Final answer
    x = 410.34

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.